ʻIke ʻike loea Hydroxypropyl Methylcellulose
Eia ka papaʻaina e hōʻike ana i kekahi ʻikepili ʻenehana maʻamau no ka hydroxypropyl methylcellulose (HPMC):
Waiwai | Waiwai |
---|---|
ʻO ke kinona | ʻO ka cellulose derivative |
ʻAno molekala | (C6H7O2(OH)xm(OCH3)yn(OCH2CH3)z)n |
Laulā kaumaha molekala | 10,000 – 1,500,000 g/mol |
Ka nana aku | Keʻokeʻo i ka pauka keʻokeʻo |
Ka hoʻoheheʻe | Hiki ke hoʻoheheʻe ʻia i ka wai, ʻaʻole hiki ke hoʻoheheʻe ʻia i nā mea hoʻoheheʻe organik |
Laulā viscosity | 5 – 100,000 mPa·s (e pili ana i ka pae viscosity a me ka noʻonoʻo ʻana) |
Palena wela gelation | 50 – 90°C (e pili ana i ka pae viscosity a me ka hoʻopaʻa ʻana) |
pae pH | 4.0 – 8.0 (1% hoʻonā) |
ʻoluʻolu | ≤ 5.0% |
ʻAno lehu | ≤ 1.5% |
Nā metala kaumaha | ≤ 20 ppm |
Nā palena microbial | ≤ 1,000 cfu/g no ka heluna microbial aerobic; ≤ 100 cfu/g no ka huina pau o na hu a me na poni |
Nā mea hoʻoheheʻe koena | Kūlike me USP 467 |
Ka hāʻawi ʻana i ka nui o nā ʻāpana | Aia ka 90% o nā ʻāpana i loko o 80 – 250 µm |
Ola ola | 2-3 mau makahiki ke mālama ʻia ma kahi maloʻo a maloʻo |
He mea nui e hoʻomaopopo he ʻokoʻa paha kēia ʻikepili ʻenehana ma muli o ka pae kikoʻī a me ka mea hana o HPMC. Manaʻo mau ʻia e nīnau i nā kikoʻī huahana i hāʻawi ʻia e ka mea hana no ka huahana kikoʻī āu e hoʻohana nei.
Ka manawa hoʻouna: Mar-04-2023